[mirror_edk2.git] / OvmfPkg / AcpiPlatformDxe / Xen.c

/** @file\r
  OVMF ACPI Xen support\r
\r
  Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.<BR>\r
  Copyright (c) 2012, Bei Guan <gbtju85@gmail.com>\r
\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/ \r
\r
#include "AcpiPlatform.h"\r
#include <Library/HobLib.h>\r
#include <Guid/XenInfo.h>\r
#include <Library/BaseLib.h>\r
\r
#define XEN_ACPI_PHYSICAL_ADDRESS         0x000EA020\r
#define XEN_BIOS_PHYSICAL_END             0x000FFFFF\r
\r
EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER  *XenAcpiRsdpStructurePtr = NULL;\r
\r
/**\r
  This function detects if OVMF is running on Xen.\r
\r
**/\r
BOOLEAN\r
XenDetected (\r
  VOID\r
  )\r
{\r
  EFI_HOB_GUID_TYPE         *GuidHob;\r
\r
  //\r
  // See if a XenInfo HOB is available\r
  //\r
  GuidHob = GetFirstGuidHob (&gEfiXenInfoGuid);\r
  if (GuidHob == NULL) {\r
    return FALSE;\r
  }\r
\r
  return TRUE;\r
}\r
\r
/**\r
  Get the address of Xen ACPI Root System Description Pointer (RSDP)\r
  structure.\r
\r
  @param  RsdpStructurePtr   Return pointer to RSDP structure\r
\r
  @return EFI_SUCCESS        Find Xen RSDP structure successfully.\r
  @return EFI_NOT_FOUND      Don't find Xen RSDP structure.\r
  @return EFI_ABORTED        Find Xen RSDP structure, but it's not integrated.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
GetXenAcpiRsdp (\r
  OUT   EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER   **RsdpPtr\r
  )\r
{\r
  EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER   *RsdpStructurePtr;\r
  UINT8                                          *XenAcpiPtr;\r
  UINT8                                          Sum;\r
\r
  //\r
  // Detect the RSDP structure\r
  //\r
  for (XenAcpiPtr = (UINT8*)(UINTN) XEN_ACPI_PHYSICAL_ADDRESS;\r
       XenAcpiPtr < (UINT8*)(UINTN) XEN_BIOS_PHYSICAL_END;\r
       XenAcpiPtr += 0x10) {\r
\r
    RsdpStructurePtr = (EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER *)\r
                         (UINTN) XenAcpiPtr;\r
\r
    if (!AsciiStrnCmp ((CHAR8 *) &RsdpStructurePtr->Signature, "RSD PTR ", 8)) {\r
      //\r
      // RSDP ACPI 1.0 checksum for 1.0/2.0/3.0 table.\r
      // This is only the first 20 bytes of the structure\r
      //\r
      Sum = CalculateSum8 (\r
              (CONST UINT8 *)RsdpStructurePtr,\r
              sizeof (EFI_ACPI_1_0_ROOT_SYSTEM_DESCRIPTION_POINTER)\r
              );\r
      if (Sum != 0) {\r
        return EFI_ABORTED;\r
      }\r
\r
      if (RsdpStructurePtr->Revision >= 2) {\r
        //\r
        // RSDP ACPI 2.0/3.0 checksum, this is the entire table\r
        //\r
        Sum = CalculateSum8 (\r
                (CONST UINT8 *)RsdpStructurePtr,\r
                sizeof (EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER)\r
                );\r
        if (Sum != 0) {\r
          return EFI_ABORTED;\r
        }\r
      }\r
      *RsdpPtr = RsdpStructurePtr;\r
      return EFI_SUCCESS;\r
    }\r
  }\r
\r
  return EFI_NOT_FOUND;\r
}\r
\r
/**\r
  Get Xen Acpi tables from the RSDP structure. And installs Xen ACPI tables\r
  into the RSDT/XSDT using InstallAcpiTable. Some signature of the installed\r
  ACPI tables are: FACP, APIC, HPET, WAET, SSDT, FACS, DSDT.\r
\r
  @param  AcpiProtocol           Protocol instance pointer.\r
\r
  @return EFI_SUCCESS            The table was successfully inserted.\r
  @return EFI_INVALID_PARAMETER  Either AcpiTableBuffer is NULL, TableHandle is\r
                                 NULL, or AcpiTableBufferSize and the size\r
                                 field embedded in the ACPI table pointed to\r
                                 by AcpiTableBuffer are not in sync.\r
  @return EFI_OUT_OF_RESOURCES   Insufficient resources exist to complete the request.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
InstallXenTables (\r
  IN   EFI_ACPI_TABLE_PROTOCOL       *AcpiProtocol\r
  )\r
{\r
  EFI_STATUS                                       Status;\r
  UINTN                                            TableHandle;\r
\r
  EFI_ACPI_DESCRIPTION_HEADER                      *Rsdt;\r
  EFI_ACPI_DESCRIPTION_HEADER                      *Xsdt;\r
  VOID                                             *CurrentTableEntry;\r
  UINTN                                            CurrentTablePointer;\r
  EFI_ACPI_DESCRIPTION_HEADER                      *CurrentTable;\r
  UINTN                                            Index;\r
  UINTN                                            NumberOfTableEntries;\r
  EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE        *Fadt2Table;\r
  EFI_ACPI_1_0_FIXED_ACPI_DESCRIPTION_TABLE        *Fadt1Table;\r
  EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE     *Facs2Table;\r
  EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE     *Facs1Table;\r
  EFI_ACPI_DESCRIPTION_HEADER                      *DsdtTable;\r
\r
  Fadt2Table  = NULL;\r
  Fadt1Table  = NULL;\r
  Facs2Table  = NULL;\r
  Facs1Table  = NULL;\r
  DsdtTable   = NULL;\r
  TableHandle = 0;\r
  NumberOfTableEntries = 0;\r
\r
  //\r
  // Try to find Xen ACPI tables\r
  //\r
  Status = GetXenAcpiRsdp (&XenAcpiRsdpStructurePtr);\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  //\r
  // If XSDT table is find, just install its tables. \r
  // Otherwise, try to find and install the RSDT tables.\r
  //\r
  if (XenAcpiRsdpStructurePtr->XsdtAddress) {\r
    //\r
    // Retrieve the addresses of XSDT and \r
    // calculate the number of its table entries.\r
    //\r
    Xsdt = (EFI_ACPI_DESCRIPTION_HEADER *) (UINTN)\r
             XenAcpiRsdpStructurePtr->XsdtAddress;\r
    NumberOfTableEntries = (Xsdt->Length -\r
                             sizeof (EFI_ACPI_DESCRIPTION_HEADER)) /\r
                             sizeof (UINT64);\r
\r
    //\r
    // Install ACPI tables found in XSDT.\r
    //\r
    for (Index = 0; Index < NumberOfTableEntries; Index++) {\r
      //\r
      // Get the table entry from XSDT\r
      //\r
      CurrentTableEntry = (VOID *) ((UINT8 *) Xsdt +\r
                            sizeof (EFI_ACPI_DESCRIPTION_HEADER) +\r
                            Index * sizeof (UINT64));\r
      CurrentTablePointer = (UINTN) *(UINT64 *)CurrentTableEntry;\r
      CurrentTable = (EFI_ACPI_DESCRIPTION_HEADER *) CurrentTablePointer;\r
\r
      //\r
      // Install the XSDT tables\r
      //\r
      Status = InstallAcpiTable (\r
                 AcpiProtocol,\r
                 CurrentTable,\r
                 CurrentTable->Length,\r
                 &TableHandle\r
                 );\r
\r
      if (EFI_ERROR (Status)) {\r
        return Status;\r
      }\r
\r
      //\r
      // Get the FACS and DSDT table address from the table FADT\r
      //\r
      if (!AsciiStrnCmp ((CHAR8 *) &CurrentTable->Signature, "FACP", 4)) {\r
        Fadt2Table = (EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE *)\r
                       (UINTN) CurrentTablePointer;\r
        Facs2Table = (EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *)\r
                       (UINTN) Fadt2Table->FirmwareCtrl;\r
        DsdtTable  = (EFI_ACPI_DESCRIPTION_HEADER *) (UINTN) Fadt2Table->Dsdt;\r
      }\r
    }\r
  }\r
  else if (XenAcpiRsdpStructurePtr->RsdtAddress) {\r
    //\r
    // Retrieve the addresses of RSDT and\r
    // calculate the number of its table entries.\r
    //\r
    Rsdt = (EFI_ACPI_DESCRIPTION_HEADER *) (UINTN)\r
             XenAcpiRsdpStructurePtr->RsdtAddress;\r
    NumberOfTableEntries = (Rsdt->Length -\r
                             sizeof (EFI_ACPI_DESCRIPTION_HEADER)) / \r
                             sizeof (UINT32);\r
\r
    //\r
    // Install ACPI tables found in XSDT.\r
    //\r
    for (Index = 0; Index < NumberOfTableEntries; Index++) {\r
      //\r
      // Get the table entry from RSDT\r
      //\r
      CurrentTableEntry = (UINT32 *) ((UINT8 *) Rsdt +\r
                            sizeof (EFI_ACPI_DESCRIPTION_HEADER) +\r
                            Index * sizeof (UINT32));\r
      CurrentTablePointer = *(UINT32 *)CurrentTableEntry;\r
      CurrentTable = (EFI_ACPI_DESCRIPTION_HEADER *) CurrentTablePointer;\r
\r
      //\r
      // Install the RSDT tables\r
      //\r
      Status = InstallAcpiTable (\r
                 AcpiProtocol,\r
                 CurrentTable,\r
                 CurrentTable->Length,\r
                 &TableHandle\r
                 );\r
\r
      if (EFI_ERROR (Status)) {\r
        return Status;\r
      }\r
\r
      //\r
      // Get the FACS and DSDT table address from the table FADT\r
      //\r
      if (!AsciiStrnCmp ((CHAR8 *) &CurrentTable->Signature, "FACP", 4)) {\r
        Fadt1Table = (EFI_ACPI_1_0_FIXED_ACPI_DESCRIPTION_TABLE *)\r
                       (UINTN) CurrentTablePointer;\r
        Facs1Table = (EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *)\r
                       (UINTN) Fadt1Table->FirmwareCtrl;\r
        DsdtTable  = (EFI_ACPI_DESCRIPTION_HEADER *) (UINTN) Fadt1Table->Dsdt;\r
      }\r
    }\r
  }\r
\r
  //\r
  // Install the FACS table.\r
  //\r
  if (Fadt2Table) {\r
    //\r
    // FACS 2.0\r
    //\r
    Status = InstallAcpiTable (\r
               AcpiProtocol,\r
               Facs2Table,\r
               Facs2Table->Length,\r
               &TableHandle\r
               );\r
    if (EFI_ERROR (Status)) {\r
      return Status;\r
    }\r
  }\r
  else if (Fadt1Table) {\r
    //\r
    // FACS 1.0\r
    //\r
    Status = InstallAcpiTable (\r
               AcpiProtocol,\r
               Facs1Table,\r
               Facs1Table->Length,\r
               &TableHandle\r
               );\r
    if (EFI_ERROR (Status)) {\r
      return Status;\r
    }\r
  }\r
\r
  //\r
  // Install DSDT table. If we reached this point without finding the DSDT,\r
  // then we're out of sync with the hypervisor, and cannot continue.\r
  //\r
  if (DsdtTable == NULL) {\r
    DEBUG ((DEBUG_ERROR, "%a: no DSDT found\n", __FUNCTION__));\r
    ASSERT (FALSE);\r
    CpuDeadLoop ();\r
  }\r
\r
  Status = InstallAcpiTable (\r
             AcpiProtocol,\r
             DsdtTable,\r
             DsdtTable->Length,\r
             &TableHandle\r
             );\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
\r
Commit	Line	Data
522203de	1	/** @file\r
377e758c	2	OVMF ACPI Xen support\r
522203de	3	\r
522203de	4	Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.<BR>\r
377e758c	5	Copyright (c) 2012, Bei Guan <gbtju85@gmail.com>\r
377e758c	6	\r
b26f0cf9	7	SPDX-License-Identifier: BSD-2-Clause-Patent\r
522203de	8	\r
	9	**/ \r
	10	\r
	11	#include "AcpiPlatform.h"\r
	12	#include <Library/HobLib.h>\r
	13	#include <Guid/XenInfo.h>\r
4804ef49	14	#include <Library/BaseLib.h>\r
522203de	15	\r
377e758c	16	#define XEN_ACPI_PHYSICAL_ADDRESS 0x000EA020\r
	17	#define XEN_BIOS_PHYSICAL_END 0x000FFFFF\r
	18	\r
	19	EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER *XenAcpiRsdpStructurePtr = NULL;\r
	20	\r
377e758c	21	/**\r
377e758c	22	This function detects if OVMF is running on Xen.\r
522203de	23	\r
377e758c	24	**/\r
522203de	25	BOOLEAN\r
	26	XenDetected (\r
	27	VOID\r
	28	)\r
	29	{\r
	30	EFI_HOB_GUID_TYPE *GuidHob;\r
	31	\r
	32	//\r
	33	// See if a XenInfo HOB is available\r
	34	//\r
	35	GuidHob = GetFirstGuidHob (&gEfiXenInfoGuid);\r
	36	if (GuidHob == NULL) {\r
	37	return FALSE;\r
	38	}\r
	39	\r
	40	return TRUE;\r
	41	}\r
	42	\r
377e758c	43	/**\r
	44	Get the address of Xen ACPI Root System Description Pointer (RSDP)\r
	45	structure.\r
522203de	46	\r
377e758c	47	@param RsdpStructurePtr Return pointer to RSDP structure\r
	48	\r
	49	@return EFI_SUCCESS Find Xen RSDP structure successfully.\r
	50	@return EFI_NOT_FOUND Don't find Xen RSDP structure.\r
	51	@return EFI_ABORTED Find Xen RSDP structure, but it's not integrated.\r
	52	\r
	53	**/\r
522203de	54	EFI_STATUS\r
522203de	55	EFIAPI\r
377e758c	56	GetXenAcpiRsdp (\r
377e758c	57	OUT EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER **RsdpPtr\r
522203de	58	)\r
522203de	59	{\r
377e758c	60	EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER *RsdpStructurePtr;\r
	61	UINT8 *XenAcpiPtr;\r
	62	UINT8 Sum;\r
	63	\r
	64	//\r
	65	// Detect the RSDP structure\r
	66	//\r
	67	for (XenAcpiPtr = (UINT8*)(UINTN) XEN_ACPI_PHYSICAL_ADDRESS;\r
	68	XenAcpiPtr < (UINT8*)(UINTN) XEN_BIOS_PHYSICAL_END;\r
	69	XenAcpiPtr += 0x10) {\r
	70	\r
	71	RsdpStructurePtr = (EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER *)\r
	72	(UINTN) XenAcpiPtr;\r
	73	\r
	74	if (!AsciiStrnCmp ((CHAR8 *) &RsdpStructurePtr->Signature, "RSD PTR ", 8)) {\r
	75	//\r
	76	// RSDP ACPI 1.0 checksum for 1.0/2.0/3.0 table.\r
	77	// This is only the first 20 bytes of the structure\r
	78	//\r
4804ef49	79	Sum = CalculateSum8 (\r
4804ef49	80	(CONST UINT8 *)RsdpStructurePtr,\r
377e758c	81	sizeof (EFI_ACPI_1_0_ROOT_SYSTEM_DESCRIPTION_POINTER)\r
	82	);\r
	83	if (Sum != 0) {\r
	84	return EFI_ABORTED;\r
	85	}\r
	86	\r
	87	if (RsdpStructurePtr->Revision >= 2) {\r
	88	//\r
	89	// RSDP ACPI 2.0/3.0 checksum, this is the entire table\r
	90	//\r
4804ef49	91	Sum = CalculateSum8 (\r
4804ef49	92	(CONST UINT8 *)RsdpStructurePtr,\r
377e758c	93	sizeof (EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER)\r
	94	);\r
	95	if (Sum != 0) {\r
	96	return EFI_ABORTED;\r
	97	}\r
	98	}\r
	99	*RsdpPtr = RsdpStructurePtr;\r
	100	return EFI_SUCCESS;\r
	101	}\r
	102	}\r
	103	\r
	104	return EFI_NOT_FOUND;\r
	105	}\r
	106	\r
	107	/**\r
	108	Get Xen Acpi tables from the RSDP structure. And installs Xen ACPI tables\r
	109	into the RSDT/XSDT using InstallAcpiTable. Some signature of the installed\r
	110	ACPI tables are: FACP, APIC, HPET, WAET, SSDT, FACS, DSDT.\r
	111	\r
	112	@param AcpiProtocol Protocol instance pointer.\r
	113	\r
	114	@return EFI_SUCCESS The table was successfully inserted.\r
	115	@return EFI_INVALID_PARAMETER Either AcpiTableBuffer is NULL, TableHandle is\r
	116	NULL, or AcpiTableBufferSize and the size\r
	117	field embedded in the ACPI table pointed to\r
	118	by AcpiTableBuffer are not in sync.\r
	119	@return EFI_OUT_OF_RESOURCES Insufficient resources exist to complete the request.\r
	120	\r
	121	**/\r
	122	EFI_STATUS\r
	123	EFIAPI\r
	124	InstallXenTables (\r
	125	IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol\r
	126	)\r
	127	{\r
	128	EFI_STATUS Status;\r
	129	UINTN TableHandle;\r
	130	\r
	131	EFI_ACPI_DESCRIPTION_HEADER *Rsdt;\r
	132	EFI_ACPI_DESCRIPTION_HEADER *Xsdt;\r
	133	VOID *CurrentTableEntry;\r
	134	UINTN CurrentTablePointer;\r
	135	EFI_ACPI_DESCRIPTION_HEADER *CurrentTable;\r
	136	UINTN Index;\r
	137	UINTN NumberOfTableEntries;\r
	138	EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE *Fadt2Table;\r
	139	EFI_ACPI_1_0_FIXED_ACPI_DESCRIPTION_TABLE *Fadt1Table;\r
	140	EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs2Table;\r
	141	EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs1Table;\r
	142	EFI_ACPI_DESCRIPTION_HEADER *DsdtTable;\r
	143	\r
	144	Fadt2Table = NULL;\r
	145	Fadt1Table = NULL;\r
	146	Facs2Table = NULL;\r
	147	Facs1Table = NULL;\r
	148	DsdtTable = NULL;\r
	149	TableHandle = 0;\r
	150	NumberOfTableEntries = 0;\r
	151	\r
	152	//\r
	153	// Try to find Xen ACPI tables\r
	154	//\r
	155	Status = GetXenAcpiRsdp (&XenAcpiRsdpStructurePtr);\r
	156	if (EFI_ERROR (Status)) {\r
157	return Status;\r
158	}\r
159	\r
160	//\r
161	// If XSDT table is find, just install its tables. \r
162	// Otherwise, try to find and install the RSDT tables.\r
163	//\r
164	if (XenAcpiRsdpStructurePtr->XsdtAddress) {\r
165	//\r
166	// Retrieve the addresses of XSDT and \r
167	// calculate the number of its table entries.\r
168	//\r
169	Xsdt = (EFI_ACPI_DESCRIPTION_HEADER *) (UINTN)\r
170	XenAcpiRsdpStructurePtr->XsdtAddress;\r
171	NumberOfTableEntries = (Xsdt->Length -\r
172	sizeof (EFI_ACPI_DESCRIPTION_HEADER)) /\r
173	sizeof (UINT64);\r
174	\r
175	//\r
176	// Install ACPI tables found in XSDT.\r
177	//\r
178	for (Index = 0; Index < NumberOfTableEntries; Index++) {\r
179	//\r
180	// Get the table entry from XSDT\r
181	//\r
182	CurrentTableEntry = (VOID ) ((UINT8 ) Xsdt +\r
183	sizeof (EFI_ACPI_DESCRIPTION_HEADER) +\r
184	Index * sizeof (UINT64));\r
26af9aca	185	CurrentTablePointer = (UINTN) (UINT64 )CurrentTableEntry;\r
377e758c	186	CurrentTable = (EFI_ACPI_DESCRIPTION_HEADER *) CurrentTablePointer;\r
	187	\r
	188	//\r
	189	// Install the XSDT tables\r
	190	//\r
	191	Status = InstallAcpiTable (\r
	192	AcpiProtocol,\r
	193	CurrentTable,\r
	194	CurrentTable->Length,\r
	195	&TableHandle\r
	196	);\r
	197	\r
	198	if (EFI_ERROR (Status)) {\r
	199	return Status;\r
	200	}\r
	201	\r
	202	//\r
	203	// Get the FACS and DSDT table address from the table FADT\r
	204	//\r
	205	if (!AsciiStrnCmp ((CHAR8 *) &CurrentTable->Signature, "FACP", 4)) {\r
	206	Fadt2Table = (EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE *)\r
	207	(UINTN) CurrentTablePointer;\r
	208	Facs2Table = (EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *)\r
	209	(UINTN) Fadt2Table->FirmwareCtrl;\r
	210	DsdtTable = (EFI_ACPI_DESCRIPTION_HEADER *) (UINTN) Fadt2Table->Dsdt;\r
	211	}\r
	212	}\r
	213	}\r
	214	else if (XenAcpiRsdpStructurePtr->RsdtAddress) {\r
	215	//\r
	216	// Retrieve the addresses of RSDT and\r
	217	// calculate the number of its table entries.\r
	218	//\r
	219	Rsdt = (EFI_ACPI_DESCRIPTION_HEADER *) (UINTN)\r
	220	XenAcpiRsdpStructurePtr->RsdtAddress;\r
	221	NumberOfTableEntries = (Rsdt->Length -\r
	222	sizeof (EFI_ACPI_DESCRIPTION_HEADER)) / \r
	223	sizeof (UINT32);\r
	224	\r
	225	//\r
	226	// Install ACPI tables found in XSDT.\r
	227	//\r
	228	for (Index = 0; Index < NumberOfTableEntries; Index++) {\r
	229	//\r
	230	// Get the table entry from RSDT\r
	231	//\r
	232	CurrentTableEntry = (UINT32 ) ((UINT8 ) Rsdt +\r
	233	sizeof (EFI_ACPI_DESCRIPTION_HEADER) +\r
	234	Index * sizeof (UINT32));\r
	235	CurrentTablePointer = (UINT32 )CurrentTableEntry;\r
	236	CurrentTable = (EFI_ACPI_DESCRIPTION_HEADER *) CurrentTablePointer;\r
	237	\r
	238	//\r
	239	// Install the RSDT tables\r
	240	//\r
	241	Status = InstallAcpiTable (\r
	242	AcpiProtocol,\r
	243	CurrentTable,\r
	244	CurrentTable->Length,\r
	245	&TableHandle\r
	246	);\r
	247	\r
	248	if (EFI_ERROR (Status)) {\r
	249	return Status;\r
250	}\r
251	\r
252	//\r
253	// Get the FACS and DSDT table address from the table FADT\r
254	//\r
255	if (!AsciiStrnCmp ((CHAR8 *) &CurrentTable->Signature, "FACP", 4)) {\r
256	Fadt1Table = (EFI_ACPI_1_0_FIXED_ACPI_DESCRIPTION_TABLE *)\r
257	(UINTN) CurrentTablePointer;\r
258	Facs1Table = (EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *)\r
259	(UINTN) Fadt1Table->FirmwareCtrl;\r
260	DsdtTable = (EFI_ACPI_DESCRIPTION_HEADER *) (UINTN) Fadt1Table->Dsdt;\r
261	}\r
262	}\r
263	}\r
264	\r
265	//\r
266	// Install the FACS table.\r
267	//\r
268	if (Fadt2Table) {\r
269	//\r
270	// FACS 2.0\r
271	//\r
272	Status = InstallAcpiTable (\r
273	AcpiProtocol,\r
274	Facs2Table,\r
275	Facs2Table->Length,\r
276	&TableHandle\r
277	);\r
278	if (EFI_ERROR (Status)) {\r
279	return Status;\r
280	}\r
281	}\r
282	else if (Fadt1Table) {\r
283	//\r
284	// FACS 1.0\r
285	//\r
286	Status = InstallAcpiTable (\r
287	AcpiProtocol,\r
288	Facs1Table,\r
289	Facs1Table->Length,\r
290	&TableHandle\r
291	);\r
292	if (EFI_ERROR (Status)) {\r
293	return Status;\r
294	}\r
295	}\r
296	\r
297	//\r
e3099174 LE	298	// Install DSDT table. If we reached this point without finding the DSDT,\r
e3099174 LE	299	// then we're out of sync with the hypervisor, and cannot continue.\r
377e758c	300	//\r
e3099174 LE	301	if (DsdtTable == NULL) {\r
	302	DEBUG ((DEBUG_ERROR, "%a: no DSDT found\n", __FUNCTION__));\r
	303	ASSERT (FALSE);\r
	304	CpuDeadLoop ();\r
	305	}\r
	306	\r
377e758c	307	Status = InstallAcpiTable (\r
	308	AcpiProtocol,\r
	309	DsdtTable,\r
	310	DsdtTable->Length,\r
	311	&TableHandle\r
	312	);\r
	313	if (EFI_ERROR (Status)) {\r
	314	return Status;\r
	315	}\r
	316	\r
	317	return EFI_SUCCESS;\r
522203de	318	}\r
522203de	319	\r